Improvement in chimney-tops



I1. L. wlLLsoN.

Chimney-Tops.

N0 -l50,2H Patented April 28, 1874.

UNITED STATES PATENT OFFICE.

.IAMES L. VILLSON, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN CHIMNEY-TOPS.

Specification forming part of Letters Patent No. 150,21 1, dated April 28, 1874; application led December 15, 1873.

To all whom it may concern:

Beit known that I, J AMES L. WILLsoN, of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Chimney-Tops, and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawing forming part of this specification, in which- Figure l is a side elevation of my said improvement. Fig. 2 is a vertical transverse `central section of the same; and Fig. 3 is a cross-section or plan taken on the line x .c drawn across Fig. l.

Similar letters of reference indicate like parts in the several figures of the drawing.

My invention has for its object to provide a chimney-top, so arranged as to prevent the smoke from being driven down the chimney; and to that end it consists in a tight metal case or cap adapted to iit the upper portion of the chimney, and through which cap is passed a series of pipes, communicating one with the other at the center of the cap, and through which pipes the smoke is discharged from the chimney, all of which will be more fully understood bythe following description:

In the drawing, A represents the ordinary chimney. B` is a sheet-metal case or cap, which is so arranged as to closely t the upper extremity or top of the chimney. This cap is made tight, and in the form shown in Figs. l and 2, or may be made in any other suitable shape that will cover the ilue of the chimney. C and C are sheet-metal pipes or iiues, which pass through the case at a right angle, one

with the other, and communicate,l one with the other, at the center of the case, as shown iu Figs. 2 and 3. These pipes or iiues extend through the walls of the ease to a point even with the outer side of the chimney or slightly beyond the same, and are each provided withv an elongated aperture, d, formed in the upper surface, which communicates with the interior of the iiue. The arrangements of these apertures are such as to allow the smoke from the iiue of the chimney to enter the pipes or crosslues, as indicated by arrows shown in Fig. 2, and to escape from the chimney through the cross-fines. The lower portions of the crossflues are made tight, thus preventing the air from being forced down through the flue of the chimney, the air passing through the pipes or cross-lines, thereby allowing a free escape of the smoke.

I do not wish to confine myself strictly to the use of sheet metal for making the case and pipes, as any fire-proof material may be used.

Having thus described my invention, I claim- The cover or cap B, provided with the pipes or flues C C, having the openings d 'connected at the center, and dverging therefrom outward through each opposite side of the cap or cover to the vertical plane of the chimney sides, as specified.

The above specification of my invention signed by me this 6th day of November, 1872.

J AMES L. WILLSON.

'Vitnesses N. H. SHEEBOENE, JAMES COLEMAN. 

